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Collapsible structures

  • US 6,901,940 B2
  • Filed: 01/17/2003
  • Issued: 06/07/2005
  • Est. Priority Date: 01/17/2003
  • Status: Expired due to Fees
First Claim
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1. A collapsible structure comprising:

  • at least three foldable frame members, each having a folded and an unfolded orientation;

    a waterproof sheet material covering each frame member to form a panel for each frame member;

    each panel further including a bottom, and with the panels coupled to each other to form a ring of panels that defines an interior space; and

    a waterproof bottom sheet attached to the bottom of each panel in a manner such that the interior space is waterproof; and

    wherein each frame member is folded into a plurality of concentric frame members when each frame member is in the folded orientation.

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